/*
 * This file is part of Applied Energistics 2. Copyright (c) 2013 - 2014, AlgorithmX2, All rights reserved. Applied
 * Energistics 2 is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser General
 * Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any
 * later version. Applied Energistics 2 is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
 * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
 * Public License for more details. You should have received a copy of the GNU Lesser General Public License along with
 * Applied Energistics 2. If not, see <http://www.gnu.org/licenses/lgpl>.
 */

package appeng.entity;

import net.minecraft.block.Block;
import net.minecraft.block.material.Material;
import net.minecraft.entity.Entity;
import net.minecraft.entity.EntityLivingBase;
import net.minecraft.entity.item.EntityItem;
import net.minecraft.entity.item.EntityTNTPrimed;
import net.minecraft.item.ItemStack;
import net.minecraft.util.AxisAlignedBB;
import net.minecraft.util.DamageSource;
import net.minecraft.world.Explosion;
import net.minecraft.world.World;

import appeng.api.AEApi;
import appeng.core.AEConfig;
import appeng.core.CommonHelper;
import appeng.core.features.AEFeature;
import appeng.core.sync.packets.PacketMockExplosion;
import appeng.helpers.Reflected;
import appeng.util.Platform;
import cpw.mods.fml.common.registry.IEntityAdditionalSpawnData;
import io.netty.buffer.ByteBuf;

public final class EntityTinyTNTPrimed extends EntityTNTPrimed implements IEntityAdditionalSpawnData {

    @Reflected
    public EntityTinyTNTPrimed(final World w) {
        super(w);
        this.setSize(0.35F, 0.35F);
    }

    public EntityTinyTNTPrimed(final World w, final double x, final double y, final double z,
            final EntityLivingBase igniter) {
        super(w, x, y, z, igniter);
        this.setSize(0.55F, 0.55F);
        this.yOffset = this.height / 2.0F;
    }

    /**
     * Called to update the entity's position/logic.
     */
    @Override
    public void onUpdate() {
        this.handleWaterMovement();

        this.prevPosX = this.posX;
        this.prevPosY = this.posY;
        this.prevPosZ = this.posZ;
        this.motionY -= 0.03999999910593033D;
        this.moveEntity(this.motionX, this.motionY, this.motionZ);
        this.motionX *= 0.9800000190734863D;
        this.motionY *= 0.9800000190734863D;
        this.motionZ *= 0.9800000190734863D;

        if (this.onGround) {
            this.motionX *= 0.699999988079071D;
            this.motionZ *= 0.699999988079071D;
            this.motionY *= -0.5D;
        }

        if (this.isInWater() && Platform.isServer()) // put out the fuse.
        {
            for (final ItemStack tntStack : AEApi.instance().definitions().blocks().tinyTNT().maybeStack(1).asSet()) {
                final EntityItem item = new EntityItem(this.worldObj, this.posX, this.posY, this.posZ, tntStack);

                item.motionX = this.motionX;
                item.motionY = this.motionY;
                item.motionZ = this.motionZ;
                item.prevPosX = this.prevPosX;
                item.prevPosY = this.prevPosY;
                item.prevPosZ = this.prevPosZ;

                this.worldObj.spawnEntityInWorld(item);
                this.setDead();
            }
        }

        if (this.fuse <= 0) {
            this.setDead();

            if (!this.worldObj.isRemote) {
                this.explode();
            }
        } else {
            this.worldObj.spawnParticle("smoke", this.posX, this.posY, this.posZ, 0.0D, 0.0D, 0.0D);
        }
        this.fuse--;
    }

    // override :P
    void explode() {
        this.worldObj.playSoundEffect(
                this.posX,
                this.posY,
                this.posZ,
                "random.explode",
                4.0F,
                (1.0F + (this.worldObj.rand.nextFloat() - this.worldObj.rand.nextFloat()) * 0.2F) * 32.9F);

        if (this.isInWater()) {
            return;
        }

        for (final Object e : this.worldObj.getEntitiesWithinAABBExcludingEntity(
                this,
                AxisAlignedBB.getBoundingBox(
                        this.posX - 1.5,
                        this.posY - 1.5f,
                        this.posZ - 1.5,
                        this.posX + 1.5,
                        this.posY + 1.5,
                        this.posZ + 1.5))) {
            if (e instanceof Entity) {
                ((Entity) e).attackEntityFrom(DamageSource.setExplosionSource(null), 6);
            }
        }

        if (AEConfig.instance.isFeatureEnabled(AEFeature.TinyTNTBlockDamage)) {
            this.posY -= 0.25;
            final Explosion ex = new Explosion(this.worldObj, this, this.posX, this.posY, this.posZ, 0.2f);

            for (int x = (int) (this.posX - 2); x <= this.posX + 2; x++) {
                for (int y = (int) (this.posY - 2); y <= this.posY + 2; y++) {
                    for (int z = (int) (this.posZ - 2); z <= this.posZ + 2; z++) {
                        final Block block = this.worldObj.getBlock(x, y, z);
                        if (block != null && !block.isAir(this.worldObj, x, y, z)) {
                            float strength = (float) (2.3f - (((x + 0.5f) - this.posX) * ((x + 0.5f) - this.posX)
                                    + ((y + 0.5f) - this.posY) * ((y + 0.5f) - this.posY)
                                    + ((z + 0.5f) - this.posZ) * ((z + 0.5f) - this.posZ)));

                            final float resistance = block.getExplosionResistance(
                                    this,
                                    this.worldObj,
                                    x,
                                    y,
                                    z,
                                    this.posX,
                                    this.posY,
                                    this.posZ);
                            strength -= (resistance + 0.3F) * 0.11f;

                            if (strength > 0.01) {
                                if (block.getMaterial() != Material.air) {
                                    if (block.canDropFromExplosion(ex)) {
                                        block.dropBlockAsItemWithChance(
                                                this.worldObj,
                                                x,
                                                y,
                                                z,
                                                this.worldObj.getBlockMetadata(x, y, z),
                                                1.0F / 1.0f,
                                                0);
                                    }

                                    block.onBlockExploded(this.worldObj, x, y, z, ex);
                                }
                            }
                        }
                    }
                }
            }
        }

        CommonHelper.proxy.sendToAllNearExcept(
                null,
                this.posX,
                this.posY,
                this.posZ,
                64,
                this.worldObj,
                new PacketMockExplosion(this.posX, this.posY, this.posZ));
    }

    @Override
    public void writeSpawnData(final ByteBuf data) {
        data.writeByte(this.fuse);
    }

    @Override
    public void readSpawnData(final ByteBuf data) {
        this.fuse = data.readByte();
    }
}
